"It was my favorite on paper by a long way," Harington admits. "That says a lot saying that I've read three of them and the fourth one is my favorite. It's the biggest for my character in a long way."

So what's in store for Season 4? "There's a lot of death," he says, echoing earlier comments he's made. And Harington says fans shouldn't think that Jon Snow is safe just because he as an actor is walking the red carpet.